Distribution of Major and some Minor Elements in Pelitic Metamorphic Rocks in the Ryoke Zone of Central Japan, in Comparison with the Non-metamorphic 'Palaeozoic' Shales

Abstract

Compilation of chemical analyses of pelitic metamorphic rocks in the Ryôke zone and those of their non-metamorphic equivalents of central Japan is made, and the examination of distribution pattern of each major and minor element in metamorphic rocks is tried zone by zone. The mutual relations between elements are also investigated. Except the volatile components, the pelitic metamorphic rocks seem to have preserved their original chemical compositions. Metasomatism had not played an important role during the Ryôke metamorphism, except as local phenomena.